Claims
- 1. A coating composition comprising a film forming resinous vehicle and incorporated therein agglomerated particulate beads having a gross particle size of from about 1 to about 50 microns in an amount sufficient to have a flatting effect on films of said filmforming material, wherein said beads consist essentially of urea or phenol and formaldehyde prepared by the method comprising:
- A. reacting a urea or a phenol and a formaldehyde, wherein the molar ratio of the urea to the formaldehyde is from about 1:1 to about 3:0.5 and wherein the molar ratio of the phenol to the formaldehyde is from about 1:1 to about 1:3, in a basic aqueous medium to form a prepolymer;
- B. blending said prepolymer with a hydroxyfunctional protective colloid-forming material;
- C. polymerizing the prepolymer by acidifying the mixture thus formed under agitation, thereby forming particulate beads and agglomerating said beads to a gross particle size of from about 1 micron to about 50 microns; and
- D. collecting said urea or phenol-formaldehyde particulate beads.
- 2. A coating composition as in claim 1 having incorporated therein pigments.
- 3. A coating composition as in claim 1 wherein said film-forming material is selected from the group consisting of acrylic resins, cellulose derivatives, polyolefin resins, polyamide resins, alkyd resins, and phenolic resins.
- 4. A coating composition as in claim 1 wherein said film-forming material is linseed alkyd resin modified with diisocyanate.
Parent Case Info
This is a division of application Ser. No. 347,604, filed Apr. 3, 1973, now U.S. Pat. No. 3,850,868, issued Nov. 26, 1974.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
855,768 |
Nov 1970 |
CA |
Non-Patent Literature Citations (2)
Entry |
Chatfield, Varnish Constituents, London, Leonard Hill Limited, 1953, pp. 345-353. |
Singer, Fundamentals of Paint, Varnish, and Lacquer Technology, St. Louis, Mo., American Paint Journal Company, 1957, pp. 35-44. |
Continuations (1)
|
Number |
Date |
Country |
Parent |
347604 |
Apr 1973 |
|